Export GPO Backup Error

Using SCM 3.0.60.0, I have imported 2 Custom Baselines from GPO Backup folders. When I go to export those same baselines in the GPO Backup format, 1 of them works fine, the other gives me this error:

Setting Save files in this format has following errors:

Rule Save files in this format has error: The string is missing with ID: '

' in setting 'Save files in this format'.

 Any help figuring out what is going on here?

-Kyle